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Posted: 9/7/2010 8:22:33 PM EDT
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I'm new to AR's. I'm proficient at building AK's, so I decided to try my hand on a 6.8 AR build.
Hopefully, I won't hound you guys with a bunch of newbie questions. I try to research things before I ask about them. But I do have one question regarding the FCG holes. See, I've built my lower from an "80%" forging, and I decided to use a slightly smaller drill bit for the FCG pin holes. So what I have are pins that measure 0.152 and holes that are also exactly 0.152 I can tap the pins in with gentle pressure,it's not a super tight fit, but I want to know if there is some reason that the pins need to be loose. I've seen the nonrotating pins for sale at brownells, so I figure I'm ok, but am I risking wearing out the lower at the pin holes by doing this? Thanks, Mike |
Well here's the result of my efforts: I'll bring her out to the range this weekend 
Stag Arms upper, model 5HL 6.8 spec II 1/11 twist chrome lined (left hand) CRYOTREATED by 300 below!
Sampsom C-Star FFHG ACLM Ambidextrous Charging Handle Troy Industries DOA Rear Sight, Black Troy Industries HK-Style Front Sight, Black PRI Gas Block With Top Picatinny Rail Homefinished lower from 80% 7075 aluminum forging, hand stamped selector markings, heat treated to T6, abrasive blasted and finished in molyresin (built for a lefty  )
Magpul Mil-Spec ACS Buttstock, Black Magpul AR-15/M16 Enhanced Triggerguard Hogue PG JP Enterprises Adjustable/Reversible Selector Norgon Ambi-Catch Brownells Carbine Stock Completion Kit Remaining lower parts from DPMS kit I also have a Nordic 22lr upper on the way. I welcome your comments, criticisms, etc. 
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I'm sorry, poked around the interwebs and I was mistaken. Only if you wish to transfer that built weapon to anyone else does the ATF require markings.
"There are two cases where (according to ATF), privately and lawfully made receivers need to be marked. 1. The receiver in question is for an NFA-controlled gun. A standard semiauto AK style rifle would not be an NFA-controlled firearm. One with a short barrel would be, or an AK "handgun" with a forward grip. (Actually, there is no question about this requirement –– it's a black-and-white requirement from the 1934 National Firearms Act [as amended].) 2. You ever transfer the gun to someone else. Whether by sale, trade, or gift –– ATFE insists that once the gun leaves the possession of the maker, it MUST be properly marked. They define "proper markings" as basically teh same things required for privately-built lawful NFA guns –– Maker's name City (or county) and state where build occured Model designation (if the maker has assigned one –– you don't have to, even if exactly copying a gun that commercially has a name like the AR15. . . )" |
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